摘要
目的 用心脏MR新技术评价致心律不齐性右室心肌病 (ARVC)的MRI征象 ,探讨MR扫描技术。方法 对 15例临床、超声诊断或疑为ARVC的病人进行MR检查 ,使用GESigna 1.5TCV/iMR扫描系统 ,扫描序列包括黑血技术 :双反转恢复快速自旋回波 (double IRFSE)和三反转自旋回波 (triple IRFSE)序列 ;白血技术 :快速电影成像 (fastcine)序列。扫描平面有短轴面、四腔面和长轴面。结果 10例诊断为ARVC ,ARVC的主要MRI表现有 :右室壁脂肪信号 3例 ,右室壁变薄 9例 ,右心室扩大 6例 ,室壁瘤形成 2例 ,右心腔内慢血流信号 9例 ,右室射血分数降低 6例 ,右房扩大 3例。右室乳头肌和左室心尖部、室间隔前部累及 2例。黑血技术可显示心脏解剖、形态及组织特性 ,白血技术主要了解心脏功能及心肌壁的运动 ,短轴面和四腔面显示病变较满意。结论 ARVC的MRI表现具有一定的特征 ,多序列、多平面成像的MR新技术对该病的诊断更准确。
Objective To evaluate MR findings of arrhythmogenic right ventricular cardiomyopathy (ARVC) with MR new techniques and to study MR scanning techniques. Methods 15 patients of ARVC diagnosed or suspected by clinical and echocardiography were performed with MRI. Using GE signa 1.5 Tesla CV/i MR system, scanning sequences included: Black-blood techniques: Double-IRFSE and Triple-IRFSE sequences, white blood technique: Fastcine sequence. Scanning plane included short axis view, four-chamber view, and long axis view. Results Ten patients were diagnosed as ARVC and the main MR features of ARVC included: fat signal intensity of right ventricular (RV) wall (3 cases), thinning of RV wall (9 cases), dilatation of the RV (6 cases), ventricular wall aneurysm formation (2 cases), slow blood flow signal within the RV (9 cases), declined ejection fraction of the RV (6 cases), enlargement of the right atrium (3 cases), and involvement of the papillary muscle of the RV, apex of the left ventricle and anterior ventricular septum (2 cases). Black-blood techniques could show the cardiac anatomy, morphologic structure, and tissue specificity, while white blood techniques mainly obtained information about cardiac function and myocardial wall motion. Short axis view and four-chamber view revealed lesions with satisfaction. Conclusion MR findings of ARVC have some specific features. Multi-sequence and multi-plane imaging with new MR techniques can accurately diagnose ARVC.
出处
《中华放射学杂志》
CAS
CSCD
北大核心
2002年第11期1013-1017,共5页
Chinese Journal of Radiology
